3 Answers
3

You can't. I've been an iOS software developer for two years and I haven't been able to find a way do this. I have tried to find solutions to this but came up with nothing. I'd love to be proven wrong, but I'm 99% certain there's no way to do this.

When my screen is too small I use 50% scale window, which is ought to be enough until I hook up my big monitor again at home.

On my setup, using Xcode 5 from the App Store, the fine is located in the path ~/Library/Preferences. Modified it as explained and it worked fine. For me, .4 was the magic number to make the iPad fit properly on my screen.
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JMackOct 14 '13 at 22:58

I had inconsistent results with the simulator in Xcode 6, but ultimately it does still seem to work. defaults write ~/Library/Preferences/com.apple.iphonesimulator SimulatorWindowLastScale "0.4"
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JMackSep 11 '14 at 8:55

Works perfectly to get iphone 6 plus to fit on my (only) hd screen
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mcfedrOct 28 '14 at 9:43